package com.yl.nettylearning.bio;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * @author yangl
 */
public class BioServer {
    public static void main(String[] args) throws Exception{
        //线程池机制
        //思路
        //1、创建一个线程池
        //2、如果有客户端连接，就创建一个线程，与之通讯
        ExecutorService newCachedThreadPool = Executors.newCachedThreadPool();
        ServerSocket serverSocket = new ServerSocket(6666);
        System.out.println("服务器已经启动了");
        while (true){
            //监听，等待客户端连接
            final Socket socket = serverSocket.accept();
            System.out.println("连接到一个客户端");
            //创建一个线程，与之通讯
            newCachedThreadPool.execute(() -> {
                //和客户端通讯
                handler(socket);
            });
        }
    }

    //编写一个handler方法，和客户端通讯
    public static void handler(Socket socket){
        byte[] bytes = new byte[1024];
        //通过socket获取输入流
        try {
            System.out.println("线程的ID是：" + Thread.currentThread().getId() +
                    "线程的名字是：" + Thread.currentThread().getName());
            InputStream inputStream = socket.getInputStream();
            //循环读取客户端数据
            while (true){
                int read = inputStream.read(bytes);
                if(read != -1){
                    //输出客户端的数据
                    System.out.print(new String(bytes, 0, read));
                }else{
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            System.out.println("关闭连接");
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
